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An additional proper overflow check, and also a little something I forgot earlier.

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This commit is contained in:
toasterbabe 2016-08-20 01:03:35 +01:00
parent 552a67200c
commit 8df146b713
1 changed files with 8 additions and 0 deletions
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8
src/r_things.c
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@ -806,6 +806,13 @@ static void R_DrawVisSprite(vissprite_t *vis)
if (overflow_test < 0) overflow_test = -overflow_test;
if ((UINT64)overflow_test&0xFFFFFFFF80000000ULL) return; // fixed point mult would overflow
if (vis->scalestep) // handles right edge too
{
overflow_test = (INT64)centeryfrac - (((INT64)vis->texturemid*(vis->scale + (vis->scalestep*(vis->x2 - vis->x1))))>>FRACBITS);
if (overflow_test < 0) overflow_test = -overflow_test;
if ((UINT64)overflow_test&0xFFFFFFFF80000000ULL) return; // ditto
}
colfunc = basecolfunc; // hack: this isn't resetting properly somewhere.
dc_colormap = vis->colormap;
if ((vis->mobj->flags & MF_BOSS) && (vis->mobj->flags2 & MF2_FRET) && (leveltime & 1)) // Bosses "flash"
@ -1607,6 +1614,7 @@ static void R_ProjectPrecipitationSprite(precipmobj_t *thing)
vis->pz = thing->z;
vis->pzt = vis->pz + vis->thingheight;
vis->texturemid = vis->gzt - viewz;
vis->scalestep = 0;
vis->x1 = x1 < 0 ? 0 : x1;
vis->x2 = x2 >= viewwidth ? viewwidth-1 : x2;